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CVE-2026-3339— Keep Backup Daily <= 2.1.1 - Authenticated (Admin+) Limited Path Traversal via 'kbd_path' Parameter

Quick assessment

Affected
fahadmahmood Keep Backup Daily
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Keep Backup Daily 2.1.1及之前版本存在路径遍历漏洞，该漏洞源于参数验证不足，可能导致受限路径遍历攻击。

CVSS 2.7 · Low EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2026-3339

Vulnerability Information
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Vulnerability Title
Keep Backup Daily <= 2.1.1 - Authenticated (Admin+) Limited Path Traversal via 'kbd_path' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Keep Backup Daily plugin for WordPress is vulnerable to Limited Path Traversal in all versions up to, and including, 2.1.1 via the `kbd_open_upload_dir` AJAX action. This is due to insufficient validation of the `kbd_path` parameter, which is only sanitized with `sanitize_text_field()` - a function that does not strip path traversal sequences. This makes it possible for authenticated attackers, with Administrator-level access and above, to list the contents of arbitrary directories on the server outside of the intended uploads directory.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Keep Backup Daily 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Keep Backup Daily 2.1.1及之前版本存在路径遍历漏洞，该漏洞源于参数验证不足，可能导致受限路径遍历攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
fahadmahmood Keep Backup Daily * ~ 2.1.1 -

II. Public POCs for CVE-2026-3339

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III. Intelligence Information for CVE-2026-3339

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Patches & Fixes for CVE-2026-3339 (4)

Vendor Advisories for CVE-2026-3339 (1)

Same Patch Batch · fahadmahmood · 2026-03-20 · 3 CVEs total

CVE-2026-3368 7.2 HIGH Injection Guard <= 1.2.9 - Unauthenticated Stored Cross-Site Scripting via Query Parameter
CVE-2026-3577 4.4 MEDIUM Keep Backup Daily <= 2.1.2 - Authenticated (Admin+) Stored Cross-Site Scripting via Backup

IV. Related Vulnerabilities

Same product: Keep Backup Daily
Same vendor: fahadmahmood
Same weakness: CWE-22

V. Comments for CVE-2026-3339

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